Green Roof Medium

They can sustain shrubs trees walkways and benches with their complex structural support irrigation drainage and root protection layers.

Green roof medium.

It should have good consistent drainage and aeration with a structure that enables it to hold water. The green roof manufacturers should fully understand the various needs and specifications of the green roof medium. The extensive green roof lightweight cost effective and probably the most popular of the green roofs. Soil tests are integral part of the process and.

A green roof or living roof is a roof of a building that is partially or completely covered with vegetation and a growing medium planted over a waterproofing membrane it may also include additional layers such as a root barrier and drainage and irrigation systems. The foot or more of growing medium needed for an intensive green roof creates a load of 80 150 pounds 36 68 kilograms per square foot. A good green roof medium is made up of a well developed soil blends. However the factors allowing for a lightweight roof can create a high stress environment for plant material.

It should also be light weight resistant to decomposition and compression and physically and chemically stable. Green roof systems may be modular with drainage layers filter cloth growing media and plants already prepared in movable often. Container gardens on roofs where plants are maintained in pots are not generally considered to be true green roofs although. Intensive green roofs are essentially elevated parks.

Green roof growing medium is composed of mineral aggregates and only a small amount of organic material.